Cita APA (7a ed.)
Caswell, J. E. (1956). ARCTIC FRONTIERS: UNITED STATES EXPLORATIONS IN THE FAR NORTH.
Cita estilo Chicago (17a ed.)
Caswell, John Edwards. ARCTIC FRONTIERS: UNITED STATES EXPLORATIONS IN THE FAR NORTH. 1956.
Cita MLA (9a ed.)
Caswell, John Edwards. ARCTIC FRONTIERS: UNITED STATES EXPLORATIONS IN THE FAR NORTH. 1956.
Precaución: Estas citas no son 100% exactas.